The battle in front of Heaven's Gate had allowed Tang Zhen to gain a lot. He had captured thousands of cultivators from both camps.
Lou Cheng's actions were equivalent to offending the two major camps and pushing himself to the forefront of the storm.
No matter which side it was, it was absolutely impossible for them to give up.
It looked like a disaster, but in fact, he had to do it. Lou Cheng wanted to remain neutral, but it was impossible to do so.
Lou Cheng was a piece of fat meat that anyone would want to take a bite of. They would never let go of it easily.
Since the result was already decided, he might as well act tough and let people know that Lou Cheng wasn't someone to be slaughtered.
Not only would they not be able to bite through it, they might even lose their teeth.
If Lou Cheng could gain enough time to grow, he wouldn't be afraid of the enemy's invasion.